Make sure we have a show_usage function prototype
 -Erik
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index b50b1ed..c55ebbb 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -77,7 +77,7 @@
 };
 
 #ifndef BB_VER
-static void show_usage(void)
+static void __attribute__ ((noreturn)) show_usage(void)
 {
 	printf(
 "Usage: udhcpc [OPTIONS]\n\n"
@@ -99,6 +99,8 @@
 	);
 	exit(0);
 }
+#else
+extern void show_usage(void) __attribute__ ((noreturn));
 #endif